Section 10,8: Edit

 Edit descriptors:
   +--------------------------+--------------+
   |         Function         |    Format    |
   +--------------------------+--------------+
   | Character constant       | 'characters' |
   |                          |      or      |
   |                          | "characters" |
   | Hollerith                | nHchar...    |
   | Scale factor             | nP           |
   | Blanks are null (input)  | BN           |
   | Blanks are zero (input)  | BZ           |
   | Input size               | Q            |
   | Plus sign (always)       | SP           |
   | Plus sign (never)        | SS           |
   | Default plus sign        | S            |
   | Skip spaces (same as TRn)| nX           |
   | Position (Tab)           | Tn           |
   | Relative left tab        | TLn          |
   | Relative right tab       | TRn          |
   | Carriage control         | $            |
   | Terminate list           | :            |
   +--------------------------+--------------+